Acetylene-gas lamp



0. HARPOLD.

ACETYLENE GAS LAMP.

APPLICATION FILEDJULY 21, 191s.

1,378,828, Patented Mar. 29,1921.

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ACETYLENE GAS LAMP.

APPLICATION FILED JULY 21,1916.

Patented Mm. 29, 1921.

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entree er oyrro Harmonia, on nosnnann, INDIANA.

ACETYLENE-GAS LAMP.

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To all whom 2'25 may concern Be it known that I, OTTO HAnroLD, a citizen of the United States, residing at llosedale, in the county of Parks and State of Indiana, have invented new and useful improvements in Acetylene-Gas Lamps, of which the following is a specification.

My present invention relates to improvements in acetylene gas lamps and more especially to those of the type adapted particularly for use by miners. The primary objects of the invention are to provide a lamp of this character which will be capable of eflieient and reliable operation and which can be recharged and cleaned if necessary with facility; to provide a lamp of this character which canbe manufactured inexpensively and yet be durable; to provide improved means for holding-the carbid recep tacle in Jroper relation to the water tank; to provide a lamp which can be carried with convenience and comfort upon a miners cap; and to provide other features of ad vantage as will hereinafter appear.

To these and other ends, the invention consists in certain improvements, and combinations and arrangements of parts, all as will he hereinafter more' fully described, the novel features being pointed out particularly in the claims at the end ofthe' specification.

In the accompanying drawings Figure 1 is a perspective view of an acetylene gas lamp constructed in accordance with the present invention, the lamp shown in this embodiment of the invention being of the type adapted to be carried on a min ers cap. v

Fig. I 2 represents a vertical section through the lamp taken on a diameter there'- of which intersects the burner, the water supply to thecarbid being shown cutoff in this figure. r 1

Fi represents a vertical section through the lamp on the line 3 8, Fig.2, and

Fig. 4i is a detail perspective. view of the water supply nozzle.

Similar parts are designated by the same reference characters in the several views.

Certain features of the present invention are applicable generally to acetylene gas generators or lamps while other features are peculiarly advantageous in connection with ininerslamps. The preferred embodiment of the invention is shown in the accompany- Specification of Letters Patent. Pa tgntgd Big 29, 1921 Application filed July 21, 1916. Serial ivo.'110,5e2.

ing drawings and will be hereinafter. de

'scribed in detail, the invention in this instance being embodied in a lamp of the type adapted to be carried upon miners caps. it is to be understood, however, that the invention is not restricted to theprecise construction shown, as equivalent constructions are contemplated and will be included within the scope of the claims.

In the present instance the lamp comprises a water tank 1, a carbid receptacle 2, a burner 23, and means to be hereinafter described for controlling the flow of water from the water tank to the carbid in the carbid receptacle. In applying the invention to minors lamps, particularly of the type adapted to becarried on the front of the miners cap, it is preferable to form the water tank. 1 with a flat or substantially flat rear wall 4 while the front of this tank may be round, as shown. A hook or equivalent attaching device 5 is secured to the water tank and provides means for attaching the lamp to the miners cap. By forming the rear wall a of the water tank flat, or substantially so, arelativiey flat it is provided in the lamp and the cap which will prevent lateral rocking or rolling of the lamp relatively'to the cap. It is also preferable in such cases to make the water tank of a size larger than the diameter of the carbid receptacle or to otherwise construct the water tank whereby the latter will overhang at the rear the carbid receptacle, as will appear from Fig. 2. d ith this arrangement, the Water tank will be in contact with the front of the ininers cap while the carbid receptacle will be spaced forwardly from the cap, and theheat generated by the formation of from the carbid in the carbid receptacle will give no discomfort to the miner. Any

suitable means maybe provided for introducing water into the water tank. As shown, a tapered nipple 6 is formed on the top of the tank through which water may be introduced, and a cap 7 is provided which cap normally closes the opening in the nipple. The cap is preferably hinged at one side of the nipple 6, as at 8, while a manually releasable catch 9 cooperates with its opposite side to hold it normally in closed position. In order to admit air to the water tank but to exclude dirt or foreign matter therefrom, an upwardly bowed tube 10 is fitted to the top of the water tank one or both ends of the tube opening into the water tank at the under side of the top thereof, and a vent or air inlet 11 is formed in the under side of the tube 10 above the top of the water tank. This arrangement enables air to enter the water tank through the opening 11 in the under side of the tube 10, but dirt or foreign matter dropping upon the top of the lamp cannot enter the water tank, and hence clogging of the water passages of the lamp by dirt or foreign matter is relieved.

The carbid receptacle 2 hasa proper gastight fit upon the under side of the water tank. As shown, the upper edge of the carbid receptacle is rolled, as at 12, and is adaptedytofit between a pair of flanges 13 and 14: which project downwardly from the under side of the water tank, a gasket 15 being contained between the flanges and engaged by the upper rolled edge of the carbid receptacle.

The present invention provides means for attaching and releasing the carbid receptacle relatively to the water tank, and such means serves to maintain a proper gas-tight fit between these parts even thought-he lamp may be subjected to more or less shock. As shown, the lower edge of the carbid receptacle is serrated circumferentially, as at 16, and a yoke l? is provided the upper ends of which have eyes 18 and the sides of which have resilient bonds or coils 19 formed therein, The lower or intermediate portion of the yoke is adaptedto extend across the bottom of the carbid receptacle and to engage the serrated edge 16 thereof diametrically. A bail 20 is pivoted at opposite sides of the water tank, this bail having loops 21 formed therein which loops pass through the eyes 1.8 on the upper ends of the yoke 17. The bail 20 has offset portions 22 near its pivots whereby, when the bail occupies the dotted line position shown in Fig. 2, the yoke will be lowered sufficiently to enable its lower portion to be disengaged from the bottom of the carbid receptacle and swung to one side thereof, thus permitting removal of the carbid receptacle, while when the bail is swung in a reverse direction, tension in an upward direction is exerted upon the yoke, drawing the lower portion thereof upwardly against the bottom of the carbid receptacle and thereby holding the upper rolled edge of this receptacle in gas-tight engagement with the gasket 15. The coils or bends 19 in the side arms of the yoke afford sufiicient elasticity to maintain a gastight joint between the water tank and the carbid receptacle, even though the lamp be subjected to shock or forces tending to separate the water tank and carbid receptacle; While the bail is inposition to hold the carbid receptacle in operative relation with the water tank, its middle or operating portion rests upon the top of the water tank, as

appears in Figs. 1 and 2.

The bottom of the water tank is provided with a gas passage or port 23, and a chamber 24- is provided above this port to contain a body of cotton or other filtering material 25. A gas outlet tube 26 leads from the chamber 24 forwardly through the forward wall of the water tank 211K118 provided exterior-1y of the water tank with a threaded nipple 27. nipple 27. "The reflector 28 is preferably secured in position by a cap 29, which cap also serves as a protector for the burner. As shown, the nipple 27 has a square or a11- gular'portion 30 adjacent to the forward wall of the water tank and the reflector has 'a square or angular opening-'31 to fit over the correspondingly shaped portion 30. The cap 29 is screwed upon the nipple and when in position thereon it clamps the reflector between its rear edge'and the front wall of the water tank. The reflector may be procomprises a sleeve 34; which has a tight .fit

at its top in the top wall of the water tank, its lower portion has a tight fit in the bottom of the water tank,and its lower end projects for a suitable distance below the water tank and to an appropriate depth into the ('arbid receptacle This sleeve has an opening 35 at or near the bottom of the water tank through which water may enter the sleeve. The bottom of the sleeve is closed, as at 36, and a nipple 37 projects upwardlyifroin the bottom 36, this nipple having port 38 therein. A tube 39 of a size smaller'than the sleeve 34 is fitted within said sleeve, the upper end of this tube having a threaded portion 40 which engages a correspondingly threaded portion 41 in the sleeve, and an operating head or handle 42 is fixed tothe tube and is exposed for manipulation above the top of the water tank. The lower end of the tube 39 fits closely over the upstanding nipple 37, the tube being lowered to close the port 38 in this nipple when the head or handle 42 is turned in one direction while the lower end of the tube will he lifted to uncover the opening 38 in the upstanding nipple when the head or handle 42 is turned in a reverse direction. These two positions of the tube 39 are shown in Figs. 2 and 3 respectively, the supply of water to the carbid being cut oft", in Fig. 2, while water may flow to the carbid when the tube 39 is adjusted to the position shown in Fig. 3. A water nozzle is applied to the downwardly projecting end of the sleeve 34 The burner 3 is fitted into the and, according to the present invention, means is provided for preventing clogging of this nozzle by the residue of the carbid in the carbid receptacle. As shown, the nozzle has a substantially conical lower end 43 having an outlet opening l i therein, and it has tubular portion which has diametrical slots 4C5 which split the tubular portion into two segmental sections. This tubular portion of the nozzle is flared or enlarged toward its upper end and it is adapted to fit over the lower end of the sleeve 34. The nozzle is retained on the sleeve 84 by a clamping ring 46 which, when slippedupwardly on the tubular portion of the nozzle, contracts the same upon the sleeve 34:. In order to prevent clogging of the water out let 4.4 of the nozzle, a stem 47 which may be made of wire extends downwardly through the nipple 37 and through the water outlet 414, this stemhaving cross-arms 48 which rest in the diametrical slots 45 in the nozzle. In recharging the lamp, should the nozzle become clogged with the residue of the consumed carbid, the water outlet 44: may be readily cleaned by reciprocating the stem 47 by manipulation of one of the cross-arms $8. This may be" done while the carbid receptacle is detached but without the necessity of removing the nozzle from the sleeve 84.

The'operation or" the lamp is, briefly, as

follows :The carbid receptacle is detached from the water tank by manipulation of the bail to bring it into the dotted line position shown in Fig. 2, and carbid is placed in the carbid receptacle to a depth of about half the height of this receptacle. The carbid receptacle is then replaced upon the water tank and it is fastened thereto by engaging the yoke diametrically upon the serrated lower edge of the carbid receptacle and swinging the bail into the position shown by the full lines in Fig. 2. Water is then introduced into the water tank through the cap 7. When it is desired to use the lamp, the head or handle 42 is turned to raise the tube 39 from the position shown in Fig. 2 to the position shown in Fig. 3, water then flowing from the tank through the opening 35 downwardly in the sleeve 34, through the port 38,.

and then through the opening 44 in the nozzle, thus reaching the carbid and generating acetylene gas in the usual way. The head or handle 42 is adjusted to admit the proper amount of water to produce the desired amount of gas. The gas generated from the carbid passes through the filter 25 and tube 26 to the burner 3, gas being ignited at the burner in any of the usual ways.

I claim as my invention 1. An acetyleneminers lamp comprising a water tank, a carbid receptacle to detach- I pivoted to the water tank and operatively connected to the ends ofthe arms of the yoke, the bail being movable to apply or to remove endwise' tension on the arms of the yoke.

2..An acetylene lamp comprising a water a tank, a carbid receptacle adapted to removably fit against the bottom of said tank, and means for resiliently holding the carbid receptacle in cooperative relation with the wa-.

ter tank, said means comprising a yoke having an mtermediate portlon to extend across the bottom of the carbid receptacle and having upwardly extending arms arranged at opposite sides of the carbid receptacle and water tank formed with resilient coils, the

upper ends of said arms being formed with.

eyes, and a bail pivotally connected to the water tank and arranged on the upper side thereof, the sides of the bail adjacent to their pivots being formed with loops which pivotally engage the eyes on the upper ends of the arms'of the bail, the bail when swung into one position applying and maintaining longitudinal tension on the arms of the yoke and when swung into a reverse position relieving-such tension to permit detachment of the carbid receptacle from the water tank.

3. An acetylene lamp comprising a water tank, a carbid receptacle adapted to fit against the bottom of the water tank and having a serrated lower edge, a yoke having an intermediate portion adapted to engage diametrically opposite serrations in the lower edge of the carbid receptacle and having upwardly extending arms at opposite sides of the carbid receptacle and water tank,

said arms being formed with resilient coils and having eyes at their upper ends, and a bail having its ends pivoted at opposite sides of the water tank near the top thereof, the bail being formed near its pivot points with loops which pivotally engage the eyes of the yoke and the intermediate portion of the bail being movable into a position on the top of the water tank to apply and maintain longitudinal tension on the arms of the yoke.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

OTTO HARPOLD. Witnesses:

STEWARD SHADLEY, GEORGE W. COTTRELL. 

